Problem N5602 probability theory confidence interval
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- x̅=28.9, n=35, σ=2.1. Find the confidence interval for the mathematical expectation a of a normally distributed quantitative attribute X of the general population with reliability γ=0.95, knowing the sample mean x̅в=28.9; sample size n=35 and standard deviation σ=2.1.
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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)